KDK-200 Style Quick Change Tool Post Interchangeable with KDK same series tool Holders. All working parts hardened and ground. Lathe Swing: 18-24″ Lock Down Bolt Diameter: 3/4″ Dovetail is 1.75. Interchangeable with KDK same series tool Holders. Lock Down Bolt Diameter: 3/4. Dovetail is 1.75. If you would like to return your new, unopened (if factory sealed), and unused item. Find the item you ordered. Select from the following 5 reasons. Found a Better Price. Just Didn’t Like it.